Price history on Walmart.com for
Hi-TECH CROSS FLOW CAR STEREO AMPLIFIER COMPONENT COOLING AMP FAN LOW VIBRATION
See on WalmartProduct info
12V 3-1/2” Cross-Flow Turbo Cooling Fan Keeps audio amplifier cool while in use Low profile & compact design for tight spaces Improved mounting tabs and cross-flow design 12 volt system 40 cubic ft. of airflow per minute 5” (long) X 1.75” (deep) X 1.75” (high) Manufacturer Warranty
... read more.